Correlation and Differences Between Tissues and Serum Level of CA125 and CA19-9 in Endometrial Cancer

doi:10.3877/cma.j.issn.1673-5250.2013.02.013

Objective

To discuss the expression and relationship of the tissue and serum level of CA₁₂₅ and CA_19-9 in endometrial cancer.

Methods

From April 2008 to April 2012, sixty-five cases of endometrial cancer were selected into this study (endometrial cancer group). Meanwhile, thirty cases of normal endometria were included into control group and 40 cases of endometriosis (EMs) were selected as EMs group. The serum levels of CA₁₂₅ and CA_19-9 were detected by ELISA, and the histological expression level of CA₁₂₅ and CA_19-9 were detected by immunohistochemistry and Western blot. The correlation of CA₁₂₅ and CA_19-9 were analyzed. The study protocol was approved by the Ethical Review Board of Investigation in Human Being of Affiliated Lianjiang Hospital of Guangdong Medical College. Informed consent was obtained from all participates.

Results

The expression of CA₁₂₅ and CA_19-9 in endometrial cancer group were significantly higher than those in EMs group and control group (P<0.05). The level of CA₁₂₅ and CA_19-9 in EMs group were significantly higher than those of control group (P<0.05). The serum level of CA₁₂₅ and CA_19-9 were significantly related with histological expression (r=1.12, P<0.05; r=2.04, P<0.05).

Conclusions

CA₁₂₅ and CA_19-9 have high expression in endometrial cancer, and they have positive correlation between serum level and histology level, which have important diagnostic value.

Key words: endometrial cancer, CA₁₂₅, CA_19-9, correlation

表1 3组患者血清CA₁₂₅和CA_19-9水平及其阳性率比较(±s)

Table 1 Comparison of serum CA₁₂₅ and CA_19-9 levels and positive rates among three groups (±s)

组别	n	CA₁₂₅		CA_19-9
组别	n	水平(U/mL)	阳性率[n(%)]	水平(U/mL)	阳性率[n(%)]
子宫内膜癌组	65	98.40±7.71^{a b}	62(95.38)^{a b}	112.34±10.71^{a b}	63(96.92)^{a b}
EMs组	40	48.36±5.56^a	18(45.00)^a	51.91±6.62^a	21(52.50)^a
对照组	30	28.27±4.21	1 (3.33)	30.32±3.65	2 (6.67)
χ²/t		21.54	19.64	11.62	24.87

表1 3组患者血清CA₁₂₅和CA_19-9水平及其阳性率比较(±s)

Table 1 Comparison of serum CA₁₂₅ and CA_19-9 levels and positive rates among three groups (±s)

组别	n	CA₁₂₅		CA_19-9
组别	n	水平(U/mL)	阳性率[n(%)]	水平(U/mL)	阳性率[n(%)]
子宫内膜癌组	65	98.40±7.71^{a b}	62(95.38)^{a b}	112.34±10.71^{a b}	63(96.92)^{a b}
EMs组	40	48.36±5.56^a	18(45.00)^a	51.91±6.62^a	21(52.50)^a
对照组	30	28.27±4.21	1 (3.33)	30.32±3.65	2 (6.67)
χ²/t		21.54	19.64	11.62	24.87

图1 3组HE形态及CA₁₂₅和CA_19-9免疫组化染色(HE×100，免疫组化×100，A：正常子宫内膜，B：EMs，C：子宫内膜癌)

Figure 1 The observation of HE morphological and immunohistochemical staining of CA₁₂₅ and CA_19-9 in three groups (A: Normal endometrial, B: Endometriosis, C: Endometrial cancer)

表2 3组标本的免疫组化结果的CA₁₂₅和CA_19-9阳性率比较[n(%)]

Table 2 Comparison of positive rates of immunohistochemistry of CA₁₂₅ and CA_19-9 among three groups[n(%)]

组别	n	CA₁₂₅		CA_19-9
组别	n	阳性率	阴性率	阳性率	阴性率
子宫内膜癌组	65	60(92.31)^ab	5 (7.69)^{a b}	61(93.85)^ab	4 (6.15)^ab
EMs组	40	25(62.50)^a	15(37.50)^a	28(70.00)^a	12(30.00)^a
对照组	30	2 (6.67)	28(93.33)	1 (3.33)	29(96.67)
χ²		7.92	10.32	8.87	7.21

表2 3组标本的免疫组化结果的CA₁₂₅和CA_19-9阳性率比较[n(%)]

Table 2 Comparison of positive rates of immunohistochemistry of CA₁₂₅ and CA_19-9 among three groups[n(%)]

组别	n	CA₁₂₅		CA_19-9
组别	n	阳性率	阴性率	阳性率	阴性率
子宫内膜癌组	65	60(92.31)^ab	5 (7.69)^{a b}	61(93.85)^ab	4 (6.15)^ab
EMs组	40	25(62.50)^a	15(37.50)^a	28(70.00)^a	12(30.00)^a
对照组	30	2 (6.67)	28(93.33)	1 (3.33)	29(96.67)
χ²		7.92	10.32	8.87	7.21

图2 Western blot检测CA₁₂₅和CA_19-9的表达(1：子宫内膜癌组，2：EMs组，3：正常组)

Figure 2 The expression of CA₁₂₅ and CA_19-9 in the three groups detected by Western blot (A: Endometrial cancer, B: Endometriosis, C: Normal endometrial)

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